Adjustable support for temporary centerings.



Patented Och l0; I899.

'M. FERRET. ADJUSTABLE SUPPORT FOR TEMPORARY CENTERINGS;

(Application filed. June 14, 1899.) (H 0 M u d a! Whmsses;

UNITED STATES PATENT OFFICE.

MARC FERRET, OF BELLEY, FRANCE.

.ADJUSTABLE SUPPORT FOR TEMPORARY CENTERINGST.

SPECIFIGATIQN forming part of Letters Patent No. 634,671, dated October 10, 1899-.

Application filed June 14, 1899,

- To all whom it may concern:

Be it known that I, MARC FERRET, a citizen of the Republic of France, residing at Belley, Department of the Ain, France, have composed of two juxtaposed bars of metal,

invented certain new and useful Improvements in Adjustable Supports for Temporary As an exponent of the invention and for the purpose of explaining its nature and the mode of its application I have represented the best apparatus now known to me for that end in the accompanying drawings,in which' Figure 1 is a view in elevation of such a support mounted upon a cased beam with the planks of the centering in position thereon. Fig. 2 is a like view of said support mounted upon an uncased beam. Fig. 3 is a plan view of the support and its keepers, and'Fig. 4 is a section through said support on the line A B of Fig. 3 and of ordinary working size.

As shown in the drawings,'the support is a and I), having sliding contact on the proximate faces and ribbed or flanged longitudinally, as at a and b, or otherwise given a special external contour on the exterior faces, so as to leave a central portion projecting up above said ribs, and terminating in a plane surface Z2 upon which the centering may be laid. Each bar is provided at one end with a hinged hook or claw 0, adapted to take over a beam or othersuitable point of suspension. The two bars play lengthwise in slotted keep one (Z, which permit the support to be lengthened and shortened at need and whichhold them alined straight or slightly arched. -These keepers closely embrace the lower halves of the bars, as shown, and take over Serial narrates. on model.)

their flanges, but do not rise to a level with the plane upper surface b which projects untrammeledabove them by reason of their slots. This permits the planks constituting the centering to be laid directly upon the supports without wedging or chockiug up.

The support can be constructed of iron, steel, or anyother suitable metal, and even of wood or wood and iron combined, and any suitable commercial form of bar-iron may be employed in its construction-as angle-iron, U -bars, grooved rails, the. -'-provided it afiords lateral locking ribs or flanges for the engagement of the keepers-in a word, any form of bar-iron which permits the two arms of an extensible support to be confined by keepers which will not rise to or above their upper or bearing surface.

The dimensions of the support, such as the length and section of the arms or pieces which compose it, will vary according to the leads and the reaches to which it is to be applied.

'Having thusdescribed my invention, what I claim as new, and desire to secure by Letters Patent, is

1. An adjustable support for temporary centerings, composed of two bars in sliding contact along their proximate faces and havin g longitudinal exterior ribs below the plane of their upper edges, slotted keepers embracing said ribs and holding saidupper edges flush with each other to present a plane surface throughout the length of the support, and an engaging hook or claw at the outer end of each of said bars.

2. An adjustable support for ccnterings, composed of two bars in sliding contact along their proximate faces, and with longitudinal side ribs on their exterior faces below the plane of their upper edges, slotted keepers embracing said ribs, and hooks or claws hinged to the outer ends'ofsaid bars.

In testimony that I claim the foregoing I have hereunto set my hand.

j MAR-G FERRET.

Witnesses:

- EDMOND LEOAUTURIER, JEAN MARSAT. 

